The infraspinatus muscle is a key muscle in the shoulder complex that plays an important role in external rotation of the arm. To effectively target and strengthen this muscle, it’s important to perform exercises that isolate and activate the infraspinatus.
One effective exercise for the muscle is the external rotation exercise with a dumbbell, which involves lying on your side with your elbow bent at a 90-degree angle and holding a dumbbell in your top hand. Slowly rotate your arm upwards, keeping your elbow close to your body, and then slowly lower the weight back down. By properly executing this exercise, you can effectively target and strengthen the infraspinatus muscle.